Single cylinder air pump



FIG. 1 is a perspective view of a single cylinder air pump showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view thereof, shown the state of the handle is pulled out.

The broken lines in the drawings depict portions of the single cylinder air pump that form no part of the claimed design. 

CLAIM The ornamental design for a single cylinder air pump, as shown and described. 